Service dependencies

A class diagram. A controller with its service and mapper, and the service's repository, validator and event publisher, laid out left to right.

                                                                      ┌────────────────────────┐
                                                                      │    OrderRepository     │
                                                                    1 ├────────────────────────┤
                                                                   ┌─►│ + save(order): void    │
                                                                   │  │ + findById(id): Order  │
                                                                   │  └────────────────────────┘
                                                                   │
                                                                   │
                                    ┌──────────────────────────┐ 1 │  ┌────────────────────────┐
                                  1 │       OrderService       │───┘  │     OrderValidator     │
                                 ┌─►├──────────────────────────┤─────►├────────────────────────┤
  ┌──────────────────────────┐   │  │ + placeOrder(cmd): Order │───┐  │ + validate(cmd): bool  │
  │     OrderController      │───┘  └──────────────────────────┘   │  └────────────────────────┘
  ├──────────────────────────┤ 1                                   │
  │ + create(req): Response  │───┐                                 │
  └──────────────────────────┘   │  ┌──────────────────────┐       │  ┌────────────────────────┐
                                 │  │     OrderMapper      │       │  │     EventPublisher     │
                                 └─►├──────────────────────┤       └─►├────────────────────────┤
                                    │ + toDto(order): Dto  │          │ + publish(event): void │
                                    └──────────────────────┘          └────────────────────────┘

Spec

JSON

{
  "type": "class",
  "direction": "RIGHT",
  "classes": [
    {
      "id": "controller",
      "label": "OrderController",
      "methods": [{"visibility": "+", "text": "create(req): Response"}]
    },
    {
      "id": "service",
      "label": "OrderService",
      "methods": [{"visibility": "+", "text": "placeOrder(cmd): Order"}]
    },
    {
      "id": "repo",
      "label": "OrderRepository",
      "methods": [
        {"visibility": "+", "text": "save(order): void"},
        {"visibility": "+", "text": "findById(id): Order"}
      ]
    },
    {
      "id": "validator",
      "label": "OrderValidator",
      "methods": [{"visibility": "+", "text": "validate(cmd): bool"}]
    },
    {
      "id": "publisher",
      "label": "EventPublisher",
      "methods": [{"visibility": "+", "text": "publish(event): void"}]
    },
    {
      "id": "mapper",
      "label": "OrderMapper",
      "methods": [{"visibility": "+", "text": "toDto(order): Dto"}]
    }
  ],
  "relations": [
    {
      "id": "r-controller-service",
      "from": "controller",
      "to": "service",
      "kind": "association",
      "directed": true,
      "from_card": "1",
      "to_card": "1"
    },
    {
      "id": "r-controller-mapper",
      "from": "controller",
      "to": "mapper",
      "kind": "association",
      "directed": true
    },
    {
      "id": "r-service-repo",
      "from": "service",
      "to": "repo",
      "kind": "association",
      "directed": true,
      "from_card": "1",
      "to_card": "1"
    },
    {
      "id": "r-service-validator",
      "from": "service",
      "to": "validator",
      "kind": "association",
      "directed": true
    },
    {
      "id": "r-service-publisher",
      "from": "service",
      "to": "publisher",
      "kind": "association",
      "directed": true
    }
  ]
}

Draw it yourself

diago render service-dependencies.json > service-dependencies.svg

Open it in the playground to edit it in your browser.